All categories

3 years ago

What is oceanic crust made of?

Geography

1 answer:

sattari [20]3 years ago

5 0

Answer:

Oceanic crust, extending 5-10 kilometers (3-6 kilometers) beneath the ocean floor, is mostly composed of different types of basalts. Geologists often refer to the rocks of the oceanic crust as “sima.” Sima stands for silicate and magnesium, the most abundant minerals in oceanic crust. (Basalts are a sima rocks.)

Explanation:

You might be interested in

When Carla solved for the height from the ground to the point where the ladder

Westkost [7]

Answer:

<em>See explanation</em>

Explanation:

Given

Represent the vertical angle with $\theta$

$\theta = 75$

The question has incomplete details because the length of the ladder is not given; neither is the distance between the ladder and the wall given.

<em>See attachment for illustration</em>

So, this solution will be based on assumptions.

Represent

- The height from ground to the top of the ladder with y

- The length of the ladder with L

- The distance between the ladder and the wall with x

Carla could solve for y in any of the following ways:

1. Tan formula

$tan \theta = \frac{opp}{adj}$

In this case:

$tan \theta = \frac{x}{y}$

Multiply both sides by y

$y * tan \theta = \frac{x}{y} * y$

$y * tan \theta = x$

Divide both sides by tan

$y = \frac{x}{tan \theta}$

$y = \frac{x}{tan 75}$

This can be used if the distance (x) between the ladder and the wall is known.

Assume x = 15

$y = \frac{15}{tan 75}$

$y = 4.02$

2. Cosine formula

$cos \theta = \frac{adj}{hyp}$

In this case:

$cos \theta = \frac{y}{L}$

Multiply both sides by L

$L * cos \theta = \frac{y}{L} * L$

$Lcos \theta = y$

$y = Lcos \theta$

$y = Lcos75$

This can be used if the length (L) of the ladder is known.

Assume L = 15

$y = 15 * cos75$

$y = 3.88$

3 0

3 years ago

The picture shows a model of a cell. what is the main function of the part labeled y in the model

kompoz [17]

Please show is the model
So i can answer your question

5 0

4 years ago

ALL I GOTTA SAY IS HELP PLEASE IN GEOMETRY

miv72 [106K]

Answer:

Like with what lol

Explanation:

5 0

3 years ago

Question 1- Where does the sun go when you can't see it? Is the Sun moving

astraxan [27]

Answer

The Sun spins on its axis in a way similar to the Earth revolving to give us day and night. Also, it 'wobbles' as the planets orbit it, in the same way your washing machine wobbles if the load is unbalanced.

Explanation

hope it helps

5 0

3 years ago

Which of the following is the first atmospheric condition that leads to the South Asian monsoon?

Helga [31]

Answer:

Hot air rises over the Indian subcontinent

Explanation:

The first atmospheric condition established in the tradition theory of monsoon formation is hot air rising over the Indian subcontinent to replace cool air rising over the sea.

5 0

4 years ago